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Annette [7]
3 years ago
8

A particular model of walkie-talkie can broadcast in a circular area. The radius of the broadcast area is 7,000 feet. Find the a

rea of this circle to the nearest square foot. Use 3.14 for π.
Mathematics
2 answers:
Reptile [31]3 years ago
8 0

Answer:

153,860,000 ft^2.

Step-by-step explanation:

The area = 3.14 * r^2

= π * 7,000^2

= 153,860,000 ft^2.

o-na [289]3 years ago
7 0

Answer:

153938040.0259 ft2

Step-by-step explanation:

R= Square root of A/π

   

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Sahana sells two products for ₹. 8000 each gaining 8% on one and losing 6% on the other. Find her gain or loss percent in the wh
Margaret [11]

Based on the information given the gain or loss percent on the whole transaction​ is 1%.

<h3>Gain or loss percent: </h3>

First step is to calculate the profit on the whole transaction

Profit=(8%×8,000)-(6%×8,000)

Profit=$640-$480

Profit=$160

Now let calculate the gain or loss percentage on the whole transaction

Gain or loss percentage=160/(8000+8000)×100

Gain or loss percentage=160/16000×100

Gain or loss percentage=1%

Inconclusion the gain or loss percent on the whole transaction​ is 1%.

Learn more about gain or loss here:brainly.com/question/25278228

5 0
2 years ago
Or an angle θ with the point (−20, −21) on its terminating side, what is the value of cosine?
kherson [118]
Cos(θ) = -20/√((-20)^2 +(-21)^2)
.. = -20/-√841 . . . . . . . . . . . . . . . . . θ is a 4th-quadrant angle, so cos(θ) > 0
.. = 20/29

The value of the cosine is 20/29.
3 0
3 years ago
Read 2 more answers
12 pens cost £3.00. How many pens can be bought for £8?
igor_vitrenko [27]

Answer:

<u>You can buy 32 pens for £8.</u>

Step-by-step explanation:

12÷3 =  4  ---> which means you get 4 pens for £1.

since you get 4 pens for £1, you need to multiply 4x8 to find how many pens you can buy for £8.

4x8 = 32.

<u>You can buy 32 pens for £8.</u>

<u />

<em>hope this helps !</em>

have an amazing day : )

6 0
3 years ago
Michael walked 30 meters in 20 seconds how many meters does he walk per second
Kipish [7]

Answer:

1.5 m/s or 1.5 meters per second

Step-by-step explanation:

Distance/Time=Speed

30m/20s= 1.5 m/s or 1.5 meters per second

6 0
3 years ago
Read 2 more answers
Find the volume of a pyramid with a square base, where the side length of the base is
MatroZZZ [7]

Answer:

1529.4 m^3

Step-by-step explanation:

We will use the formula V = 1/3*h*B for the volume of the pyramid, where V is volume, h is height, and B is are of the base.

First, since we know h and are looking for V, we need B. To find this, since it has a square base, we multiply b, the base length, by itself. 15.3m * 15.3m = 234.09m^2.

Next, we plug into the formula.

V = 1/3*19.6m*234.09m^2

And simplify:

V= 1/3 * 4,588.164m^3

V= 15.29.3879....

Last, round to the tenth

1529.4 m^3

5 0
3 years ago
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